^^^from the outside?
As for the system being advanced, even the Holden/nee Opel Tigra has a button released and power operated trunk and many other vehicles have a solenoid release. Although on the Tigra, it is a pain in the backside because the trunk is operated via a "dead man" safety system, whereby you have to keep holding the boot button to close it, regardless of prevailing weather conditions.
Allow me to provide a simple example of its downfall:
The CTS Coupe/CTC is t-boned on the right hand side, dislodging the battery and rupturing the fuel tank. If the driver is knocked unconscious, there is no opportunity for bystanders to get him out of the car. How about a battery fault with a child in a locked car? Is there a mechanical release on the outside? How about any cause for the battery to run flat (systematic or human error)? Is there even an old fashioned physical key? (<---these are actual questions by the way. I'm not saying them just to be a pain in the ass
)